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Noise Analysis and Optimization of a Unity Gain Sampler
Wang X(王霄); Shi ZL(史泽林); Zhao YH(赵耀宏); Qiao J(乔俊)
Department光电信息技术研究室
Conference Name2nd IEEE International Conference on Integrated Circuits and Microsystems (ICICM)
Conference DateNovember 8-11, 2017
Conference PlaceNanjing, CHINA
Source Publication2017 2ND IEEE INTERNATIONAL CONFERENCE ON INTEGRATED CIRCUITS AND MICROSYSTEMS (ICICM)
PublisherIEEE
Publication PlaceNEW YORK
2017
Pages78-81
Indexed ByEI ; CPCI(ISTP)
EI Accession number20183205656153
WOS IDWOS:000425209500017
Contribution Rank1
ISBN978-1-5386-3506-3
KeywordUnity Gain Sampler Noise Model Thermal Noise Correlated Double Sampling Time Domain Noise Simulation
Abstract

Noise analysis of a widely used switched capacitor unity gain sampler is presented, which in detail shows that the circuit structure can not only get rid of the offset voltage induced by the OTA involved, but also has the ability of suppressing 1/f noise with operation timing of the sampling capacitor, functioning as correlated double sampling in fact, however paying the price of increasing thermal noise. The noise analysis method starts from establishing noise model for the sampler in each individual clock phase. Then based on the characteristic of charge transferring by capacitors and theory of random process, the output noise power contributed by each noise source is derived, the key point of which is that how to determine whether the process of some noise source in some phase transferring to the output node is effected by filtering. At last optimization design for the capacitor elements, which determine the whole noise power, is conducted.

Language英语
Citation statistics
Document Type会议论文
Identifierhttp://ir.sia.cn/handle/173321/21557
Collection光电信息技术研究室
Corresponding AuthorWang X(王霄)
Affiliation1.Shenyang Institute of Automation, Chinese Academy of Sciences
2.Key Laboratory of Opto-Electronic Information Processing, Chinese Academy of Sciences, Shenyang 110016, China
Recommended Citation
GB/T 7714
Wang X,Shi ZL,Zhao YH,et al. Noise Analysis and Optimization of a Unity Gain Sampler[C]. NEW YORK:IEEE,2017:78-81.
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